Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed6f38f5a1b5934…

MALICIOUS

PDF

77.4 KB Created: 2021-04-25 06:02:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15b4db08ff31ebc21098178a65e07dbb SHA-1: 7273354af036508a535c4388072e99fbb8d7cc23 SHA-256: 0ed6f38f5a1b59346419ef354f911cacc5466fc44bfb10f6b238330df52eba58
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a secondary payload or redirect to a phishing site. The document body, though heavily obfuscated, appears to reference a book title, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xezojetit.ru/strik?utm_term=the+woman+in+cabin+10
    • http://biweekamnf.com/mountain_bike_games_free_download_for_pcfydty.pdf
    • https://cdn.sqhk.co/zexoribuj/hUicgjv/sakura_school_simulator_1._036_00.pdf
    • https://cdn-cms.f-static.net/uploads/4490251/normal_600be760abcac.pdf
    • https://cdn-cms.f-static.net/uploads/4367617/normal_60328344435ee.pdf
    • https://cdn.sqhk.co/vefapatape/gjhS1gh/chestburster_alien_costume.pdf
    • https://cdn-cms.f-static.net/uploads/4385634/normal_600af5e4a88d0.pdf
    • https://static.s123-cdn-static.com/uploads/4413575/normal_5ff109b3517c0.pdf
    • https://static.s123-cdn-static.com/uploads/4385021/normal_5fe3d87ad2b95.pdf
    • http://nufemewi.iblogger.org/10652415731.pdf
    • https://cdn-cms.f-static.net/uploads/4373527/normal_6030a6d74a682.pdf
    • https://cdn.sqhk.co/rijomawonuj/dimjagf/melarizodugej.pdf
    • http://alcozerox.com/agilent_1100_hplc_priceikiix.pdf
    • https://static.s123-cdn-static.com/uploads/4416331/normal_600103c1c6b9a.pdf
    • https://cdn-cms.f-static.net/uploads/4476782/normal_601493a452f7a.pdf
    • http://arthromedro.xyz/trainer_game_metro_2033_reduxah6aw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wiximevisek.epizy.com/types_of_addressing_modes_with_examples.pdf
    • https://s3.amazonaws.com/bufexa/gold_medal_popcorn_machine_2085cl_manual.pdf
    • http://nimozan.epizy.com/solidworks_2016_crack_keygen_full.pdf
    • https://s3.amazonaws.com/gebukil/carbon_democracy_meaning.pdf
    • https://s3.amazonaws.com/tetenifeme/article_writing_jobs_in_pakistan_online.pdf
    • https://s3.amazonaws.com/jiwisigetizoxif/disifuxaraterexokuso.pdf
    • https://s3.amazonaws.com/geradi/tacitus_annals_14.42.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef1b.bin
7733d2802281dd8b7ad33593d3c6611d45b9ea954e8f486527d224686551632c
pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1B 5108 bytes
font_01_sfnt_off0001006c.bin
16c0ee2f4c546ac5068147c69234ae3e4f71a6777f7e0f55fead4cbcf953de25
pdf-font-stream PDF embedded font (sfnt) at offset 0x1006C 11640 bytes